Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2018

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 24691 - 24720 of 25683

Full-Text Articles in Entire DC Network

Enhancing Online Security With Image-Based Captchas, Brian M. Powell Jan 2018

Enhancing Online Security With Image-Based Captchas, Brian M. Powell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Given the data loss, productivity, and financial risks posed by security breaches, there is a great need to protect online systems from automated attacks. Completely Automated Public Turing Tests to Tell Computers and Humans Apart, known as CAPTCHAs, are commonly used as one layer in providing online security. These tests are intended to be easily solvable by legitimate human users while being challenging for automated attackers to successfully complete. Traditionally, CAPTCHAs have asked users to perform tasks based on text recognition or categorization of discrete images to prove whether or not they are legitimate human users. Over time, the efficacy …

Go to article

Constitutional Rhetoric: The Genre Performances Of The Written Constitution In Transnational, Transcultural Contexts, Bhushan Aryal Jan 2018

Constitutional Rhetoric: The Genre Performances Of The Written Constitution In Transnational, Transcultural Contexts, Bhushan Aryal

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Biomimetic And Advanced Control Structure Design With Real Time Optimization, Temitayo Bankole Jan 2018

Biomimetic And Advanced Control Structure Design With Real Time Optimization, Temitayo Bankole

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Transforming Undergraduate Stem Education: Reforming Classrooms By Training Current And Future Faculty, Karen E. Bailey Jan 2018

Transforming Undergraduate Stem Education: Reforming Classrooms By Training Current And Future Faculty, Karen E. Bailey

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the absence of formal pedagogical training, educators tend to teach the way they were taught, using traditional lecturing. Numerous studies have shown that engaging students in active learning improves student learning and retention of knowledge. Reforming STEM education has become a national imperative. Since the turn of the millennium, many initiatives have sprung forth in response to a growing awareness of the need for reform in post-secondary biology education. The National Academies Summer Institutes (NASI) is one such initiative. The Summer Institutes provide training in evidence-based strategies for biology educators from primarily research universities where lecture-based teaching in large …

Go to article

Choice Dynamics In Concurrent Ratio Schedules Of Reinforcement, Daniel Bell-Garrison Jan 2018

Choice Dynamics In Concurrent Ratio Schedules Of Reinforcement, Daniel Bell-Garrison

Graduate Theses, Dissertations, and Problem Reports (ETD)

Roughly 50 years of research has demonstrated that choice changes as a function of the amount of reinforcement available from two concurrently available schedules of reinforcement, and this function has been labeled the generalized matching law. The matching law, however, historically only accounts for choice between two variable-interval schedules of reinforcement. If the matching law is to be a general perspective for how organisms allocate behavior amongst several alternatives, then it ought to account for behavior when reinforcers depend on work requirements in addition to time requirements. To study these contexts, the present experiments employed concurrent ratio schedules that were …

Go to article

A Long Short-Term Memory Neural Network For Improved Twins' Voice Differentiation, Stallone Bruno-Ray Sabatier Jan 2018

A Long Short-Term Memory Neural Network For Improved Twins' Voice Differentiation, Stallone Bruno-Ray Sabatier

Graduate Theses, Dissertations, and Problem Reports (ETD)

Although successfully implemented in certain situations, the reliability of speaker recognition (SR) decreases due to speaker and channel variability present between enrollment and evaluation samples, as well as the available length of speech utterances. The issue of speaker variability becomes more pronounced when the number of speakers in the evaluation set increases, as there is a higher probability that two voices may sound more alike. The differentiation of intra-twin pairs' voices can be beneficial to general SR because inclusion can simulate this effect. This is due to the fact that their shared voice similarities are comparable to the potential inter-speaker …

Go to article

Optimization Of Design And Manufacturing Process Of Fusion Filament Fabrication (Fff) 3d Printing, Jaeyoon Kim Jan 2018

Optimization Of Design And Manufacturing Process Of Fusion Filament Fabrication (Fff) 3d Printing, Jaeyoon Kim

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Homage To Cube, Ken Lu Jan 2018

Homage To Cube, Ken Lu

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Brownian Motion In Cellular Receptors, Ouri Maler Jan 2018

Brownian Motion In Cellular Receptors, Ouri Maler

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

A Statistical Framework For The Development Of Prediction And Clustering Models In The Hazard Assessment Of Nanomaterials, Ying Pei Jan 2018

A Statistical Framework For The Development Of Prediction And Clustering Models In The Hazard Assessment Of Nanomaterials, Ying Pei

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Development And Particle Scale Modeling Of Metal Oxide Oxygen Carriers In Chemical Looping Applications, Jarrett A Riley Jan 2018

Development And Particle Scale Modeling Of Metal Oxide Oxygen Carriers In Chemical Looping Applications, Jarrett A Riley

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

The Effects Of High Intensity Interval Training On Arterial Health, James Smith Jan 2018

The Effects Of High Intensity Interval Training On Arterial Health, James Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Characterizing The Pore Structure Of The Marcellus Shale, Liaosha Song Jan 2018

Characterizing The Pore Structure Of The Marcellus Shale, Liaosha Song

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.

Go to article

Rethinking Interaction: Identity And Agency In The Performance Of “Interactive” Electronic Music, Jacob A. Kopcienski Jan 2018

Rethinking Interaction: Identity And Agency In The Performance Of “Interactive” Electronic Music, Jacob A. Kopcienski

Graduate Theses, Dissertations, and Problem Reports (ETD)

This document investigates interaction between human performers and various interactive technologies in the performance of interactive electronic and computer music. Specifically, it observes how the identity and agency of the interactive technology is experienced and perceived by the human performer. First, a close examination of George Lewis’ creation of and performance with his own historic interactive electronic and computer works reveals his disposition of interaction as improvisation. This disposition is contextualized within then contemporary social and political issues related to African American experimental musicians as well as an emerging culture of electronic and computer musicians concerned with interactivity. Second, an …

Go to article

Hydrogeology And Water Management In The Arkwright Underground Coal Mine, Pittsburgh Seam, Northern West Virginia, Bryant D. Mountjoy Jan 2018

Hydrogeology And Water Management In The Arkwright Underground Coal Mine, Pittsburgh Seam, Northern West Virginia, Bryant D. Mountjoy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Arkwright #1 is a closed underground mine in the Pittsburgh coal seam near Morgantown, West Virginia USA. Arkwright shares perimeter boundaries/barriers with three other closed Pittsburgh seam mines (Osage #3, Jordan #93, Federal #1) and is partially overlain by flooded Sewickley seam mines, 25 m above it. This mine is significant primarily because it manages and treats water diverted from nearly 20 other closed mines over a 600 square kilometer area. This study examines water levels, pump records, and mine maps to describe the hydrogeology of Arkwright Mine. After closure in 1995, Arkwright and the adjacent northern Osage mines began …

Go to article

Reducing Spatial Stochastic Models Of Membrane Receptors To Approximately Equivalent Chemical Reaction Networks Through Coarse Graining, Christopher Short Jan 2018

Reducing Spatial Stochastic Models Of Membrane Receptors To Approximately Equivalent Chemical Reaction Networks Through Coarse Graining, Christopher Short

Graduate Theses, Dissertations, and Problem Reports (ETD)

Computational models are necessary for understanding how biological functionality emerges from a complex network of molecular interactions such as in cell signaling. Due to the complexity of biological systems, the normal scientific method of hypothesizing then testing predictions is becoming increasingly difficult. The large number of processes limits the level of modeling detail; signaling models typically adopt a non-spatial representation where each molecular process is characterized by a few parameters.;However, modern microscopic imaging of receptors on cell membranes reveals an intricate structure of microdomains. Receptors, such as epidermal growth factor receptor (EGFR), vascular endothelial growth factor receptor (VEGFR), and others, …

Go to article

Effect Of Non-Hermiticity On Adiabatic Elimination In Coupled Waveguides, Rahman Sharaf, M. Dehghani, Hamidreza Ramezani Jan 2018

Effect Of Non-Hermiticity On Adiabatic Elimination In Coupled Waveguides, Rahman Sharaf, M. Dehghani, Hamidreza Ramezani

Physics & Astronomy Faculty Publications

We investigate the influence of non-Hermiticity on the adiabatic elimination in coupled waveguides.We show that although the total norm of the system is not conserved in parity-time symmetric phase, the dark state intensity remains constant. However, in broken phase the eliminated waveguide loses its darkness, i.e., its field amplitude starts increasing. In both exact and broken phases, the effective Hamiltonian derived from the adiabatic elimination condition describes the dynamics of all states except the dark state. Specifically, it cannot predict the amplification in the intensity of the dark state. Our results can strengthen the control of the dynamics in cavities …

Go to article

Uncharted Waters? Legal Ethics And The Benefit Corporation, Joseph Pileri Jan 2018

Uncharted Waters? Legal Ethics And The Benefit Corporation, Joseph Pileri

Scholarly Articles in Law Reviews & Journals

Corporate law norms are reflected in lawyers’ ethical duties. The enactment of benefit corporation legislation across the country signals a legislative acknowledgment that corporate law can serve as a public, rather than a merely private, ordering mechanism. Benefit corporations expressly adopt a public benefit as a legal purpose of the enterprise. While many have written about this important development with respect to corporate fiduciary law, this essay is the first to explore the professional and ethical responsibility of lawyers representing benefit corporations. In the last century, as scholars and courts drove an understanding of corporate law that elevated the interests …

Go to article

Composition And Structure Of Soil Fauna Community In The Dexing Copper Mine Tailings Pool After Revegetation, Ping Lu, Nianhua Dai, Xiaoyan Sun, Guohua Zhang, Derong Xu, Youhong Zhan Jan 2018

Composition And Structure Of Soil Fauna Community In The Dexing Copper Mine Tailings Pool After Revegetation, Ping Lu, Nianhua Dai, Xiaoyan Sun, Guohua Zhang, Derong Xu, Youhong Zhan

Turkish Journal of Zoology

The Dexing Copper Mine is one of the largest copper mines in Asia, but few studies have reported the soil fauna community composition after revegetation. This study investigated the influence of revegetation on the soil fauna communities and structures in three vegetation restoration models (designated as I, II, and III) and in a sample without revegetation (IV) in two tailings pools of Dexing Copper Mines 1 and 2 using modified Tullgren and Baermann methods. A total of 548 individuals were collected, which belonged to 5 classes, 7 orders, 3 suborders, and 19 families. The individuals, groups, and diversity of the …

Go to article

Potential Distribution Of The Guava Psyllid Triozoida Limbata (Hemiptera, Psylloidea), Today And In Global Climate Change Scenarios, Dalva Queiroz, Marcos Silveira Wrege, Talita Benedcta Santos Künast, Marilice Cordeiro Garrastazu, Daniel Burckhardt Jan 2018

Potential Distribution Of The Guava Psyllid Triozoida Limbata (Hemiptera, Psylloidea), Today And In Global Climate Change Scenarios, Dalva Queiroz, Marcos Silveira Wrege, Talita Benedcta Santos Künast, Marilice Cordeiro Garrastazu, Daniel Burckhardt

Turkish Journal of Zoology

The jumping plant-louse Triozoida limbata is monophagous on guava (Psidium guajava), inducing leaf galls. Guava is planted today in warmer regions around the world but T. limbata is restricted to Central and South America. Recently, the latter has become a key pest in commercial plantations in Brazil (Pernambuco and São Paulo). Modeling of potential distributions is a good tool for developing control strategies of insect pests. Based on distributional data from the Americas, we created models for the psyllids for the present and future using different scenarios of climate change. The OpenModeller eco-niche modeling program was used with the Environmental …

Go to article

Determining Vulnerability Using Attach Graphs: An Expansion Of The Current Fair Model, Beth M. Anderson Jan 2018

Determining Vulnerability Using Attach Graphs: An Expansion Of The Current Fair Model, Beth M. Anderson

EWU Masters Thesis Collection

Factor Analysis of Information Risk (FAIR) provides a framework for measuring and understanding factors that contribute to information risk. One such factor is FAIR Vulnerability; the probability that an event involving a threat will result in a loss. An asset is vulnerable if a threat actor’s Threat Capability is higher than the Resistance Strength of the asset. In FAIR scenarios, Resistance Strength is currently estimated for entire assets, oversimplifying assets containing individual systems and the surrounding environment. This research explores enhancing estimations of FAIR Vulnerability by modeling interactions between threat actors and assets through attack graphs. By breaking down the …

Go to article

Population Dynamics And Water Resource Consumption In Spokane, Wa, Daniel Jesus Castillo Jan 2018

Population Dynamics And Water Resource Consumption In Spokane, Wa, Daniel Jesus Castillo

EWU Masters Thesis Collection

No abstract provided.

Go to article

Gpu Accelerated Risk Quantification, Forrest L. Ireland Jan 2018

Gpu Accelerated Risk Quantification, Forrest L. Ireland

EWU Masters Thesis Collection

Factor Analysis of Information Risk (FAIR) is a standard model for quantitatively estimating cybersecurity risks and has been implemented as a sequential Monte Carlo simulation in the RiskLens and FAIR-U applications. Monte Carlo simulations employ random sampling techniques to model certain systems through the course of many iterations. Due to their sequential nature, FAIR simulations in these applications are limited in the number of iterations they can perform in a reasonable amount of time. One method that has been extensively used to speed up Monte Carlo simulations is to implement them to take advantage of the massive parallelization available when …

Go to article

The Academic Performances Of Community College Transfer Students At Eastern Washington University (Ewu), Amanda S. Lee Jan 2018

The Academic Performances Of Community College Transfer Students At Eastern Washington University (Ewu), Amanda S. Lee

EWU Masters Thesis Collection

This thesis assesses the academic progress of transfer students at Eastern Washington University. Over %60 of college graduates attend multiple institutions (United States Department of Education, 2006) and more than %70 of Washington students attend a technical or community college before entering a 4-year institution. (HEBC, 2011) This makes transfer students an extremely valuable and important population to universities across the United States. These students run into different issues then average freshmen do, such as loss of credit which can impact their time to graduation and have a negative financial impact. Transfer student success falls heavily on receiving and having …

Go to article

User Experiences Of Spanish-Speaking Latinos: Usabiltiy Of The Frontier Behavioral Institute Website, Raquel Ramos Jan 2018

User Experiences Of Spanish-Speaking Latinos: Usabiltiy Of The Frontier Behavioral Institute Website, Raquel Ramos

EWU Masters Thesis Collection

No abstract provided.

Go to article

The Source Of Excess Nutrients To Pine Draw, Turnbull National Wildlife Refuge, Henry Price Jan 2018

The Source Of Excess Nutrients To Pine Draw, Turnbull National Wildlife Refuge, Henry Price

EWU Masters Thesis Collection

Nitrogen and phosphorus are the most common limiting nutrients for biological activity in freshwater ecosystems. Applying inorganic nitrogen fertilizer has increased crop productivity but caused excess nitrogen inputs to the hydrosphere. Nitrate contamination is a worldwide environmental problem. The fate of nitrogen in ecosystems is variable based on land type and hydrogeological interactions. Excess nitrogen can be retained in soils, sequestered in stream organisms, denitrified or transported downstream. The goals of this study were to monitor nitrogen concentrations in Pine Draw, Turnbull National Wildlife Refuge (TNWR), Washington, U.S.A., and to determine the source of nitrogen loading. Pine Draw is unique …

Go to article

Existence Of Global Solutions For Nonlinear Magnetohydrodynamics With Finite Larmor Radius Corrections, Fariha Elsrrawi Jan 2018

Existence Of Global Solutions For Nonlinear Magnetohydrodynamics With Finite Larmor Radius Corrections, Fariha Elsrrawi

Graduate Theses, Dissertations, and Problem Reports (ETD)

We discuss the existence of global solutions to the MHD equations where the effects of finite Larmor radius corrections are taken into account. Unlike the usual MHD, the pressure is a tensor and it depends on not only the density but also the magnetic field. We show the existence of global solutions by the energy methods. Our techniques of proof are based on the existence of local solution by Semigroups theory and a priori estimates.

Go to article

Graph Coloring Problems And Group Connectivity, Miaomiao Han Jan 2018

Graph Coloring Problems And Group Connectivity, Miaomiao Han

Graduate Theses, Dissertations, and Problem Reports (ETD)

1. Group connectivity. Let A be an abelian group and let iA(G) be the smallest positive integer m such that Lm(G) is A-connected. A path P of G is a normal divalent path if all internal vertices of P are of degree 2 in G and if |E(P)|= 2, then P is not in a 3-cycle of G. Let l(G) = max{lcub}m : G has a normal divalent path of length m{rcub}. We obtain the following result. (i) If |A| ≥ 4, then iA( G) ≤ l(G). (ii) If | A| ≥ 4, then iA(G) ≤ |V(G)| -- Delta(G). (iii) …

Go to article

Study On The Relationship Between Process Plan And Resource Requirement In Additive Manufacturing, Amm Nazmul Ahsan Jan 2018

Study On The Relationship Between Process Plan And Resource Requirement In Additive Manufacturing, Amm Nazmul Ahsan

Industrial and Manufacturing Engineering

Resource consumption in additive manufacturing (AM) is often tied with the physical attribute of the fabricated part. Thus, optimizing the processes plan for minimum part fabrication resource requirement is a matter of great interest. In this thesis, the hierarchical nature of the AM process plan steps are emphasized and both build direction and material deposition direction are optimized while considering the resource requirement. A novel combined two-step optimization methodology is presented to determine optimal build direction for the object and material deposition direction for layers while considering minimum contour plurality, surface quality, build height, fabrication factor, and layer contour concavity …

Go to article

Mentoring Program For Graduating Bachelor Of Science In Nursing Students, Nancy Armstrong, Tonia Mailow, Janice Thurmond, Lori Ballard, Anna Fowler, Dana Todd, Dina Byers Jan 2018

Mentoring Program For Graduating Bachelor Of Science In Nursing Students, Nancy Armstrong, Tonia Mailow, Janice Thurmond, Lori Ballard, Anna Fowler, Dana Todd, Dina Byers

Journal of Excellence in College Teaching and Learning

One way to evaluate an undergraduate nursing program effectiveness is to monitor the percentage of students who pass the National Council Licensure Examination-Registered Nurses (NCLEX-RN) on their first attempt. Development and implementation of a mentoring program was developed to improve NCLEX-RN pass rates. Purpose of the mentoring program was to identify and assist students enrolled in their last semester, who were at risk for being unsuccessful on NCLEX-RN identified by the Health Education Systems, Inc. (HESI) Exit Examination. Faculty reviewed HESI results and met with students individually, discussed results, and developed an individualized plan of study. Faculty mentors were assigned …

Go to article

First Prev Next Last